    /* //清除默认样式 */
    
    body,
    p,
    h1,
    h2,
    h3,
    h4,
    h6,
    ul,
    ol,
    li,
    dl,
    dt,
    dd,
    input,
    div button {
        margin: 0px;
        padding: 0px;
    }
    
    li {
        list-style: none;
    }
    
    a {
        text-decoration: none;
    }
    /* //万能浮动法 */
    
    .clear-fix {
        content: "";
        display: block;
        clear: both;
    }
    
    .fl {
        float: left;
    }
    
    .fr {
        float: right;
    }
    
    body {
        font-size: 12px;
    }